1 collectd - System information collection daemon
2 =================================================
8 collectd is a small daemon which collects system information periodically
9 and provides mechanisms to store and monitor the values in a variety of
16 * collectd is able to collect the following data:
19 Apache server utilization: Number of bytes transferred, number of
20 requests handled and detailed scoreboard statistics
23 APC UPS Daemon: UPS charge, load, input/output/battery voltage, etc.
26 Sensors in Macs running Mac OS X / Darwin: Temperature, fan speed and
30 Various sensors in the Aquaero 5 water cooling board made by Aquacomputer.
33 Statistics about Ascent, a free server for the game `World of Warcraft'.
36 Reads absolute barometric pressure, air pressure reduced to sea level and
37 temperature. Supported sensors are MPL115A2 and MPL3115 from Freescale
38 and BMP085 from Bosch.
41 Batterycharge, -current and voltage of ACPI and PMU based laptop
45 Name server and resolver statistics from the `statistics-channel'
46 interface of BIND 9.5, 9,6 and later.
49 Statistics from the Ceph distributed storage system.
52 CPU accounting information for process groups under Linux.
55 Chrony daemon statistics: Local clock drift, offset to peers, etc.
58 Number of nf_conntrack entries.
61 Number of context switches done by the operating system.
64 CPU utilization: Time spent in the system, user, nice, idle, and related
68 CPU frequency (For laptops with speed step or a similar technology)
71 CPU sleep: Time spent in suspend (For mobile devices which enter suspend automatically)
74 Parse statistics from websites using regular expressions.
77 Retrieves JSON data via cURL and parses it according to user
81 Retrieves XML data via cURL and parses it according to user
85 Executes SQL statements on various databases and interprets the returned
89 Mountpoint usage (Basically the values `df(1)' delivers)
92 Disk utilization: Sectors read/written, number of read/write actions,
93 average time an IO-operation took to complete.
96 DNS traffic: Query types, response codes, opcodes and traffic/octets
100 Collect DPDK interface statistics.
101 See docs/BUILD.dpdkstat.md for detailed build instructions.
104 Collect individual drbd resource statistics.
107 Email statistics: Count, traffic, spam scores and checks.
108 See collectd-email(5).
111 Amount of entropy available to the system.
114 Network interface card statistics.
117 Values gathered by a custom program or script.
118 See collectd-exec(5).
121 File handles statistics.
124 Count the number of files in directories.
127 Linux file-system based caching framework statistics.
130 Receive multicast traffic from Ganglia instances.
133 Monitor gps related data through gpsd.
136 Hard disk temperatures using hddtempd.
139 Report the number of used and free hugepages. More info on
140 hugepages can be found here:
141 https://www.kernel.org/doc/Documentation/vm/hugetlbpage.txt.
144 The intel_pmu plugin reads performance counters provided by the Linux
145 kernel perf interface. The plugin uses jevents library to resolve named
146 events to perf events and access perf interface.
149 The intel_rdt plugin collects information provided by monitoring features
150 of Intel Resource Director Technology (Intel(R) RDT) like Cache Monitoring
151 Technology (CMT), Memory Bandwidth Monitoring (MBM). These features
152 provide information about utilization of shared resources like last level
153 cache occupancy, local memory bandwidth usage, remote memory bandwidth
154 usage, instructions per clock.
155 <https://01.org/packet-processing/cache-monitoring-technology-memory-bandwidth-monitoring-cache-allocation-technology-code-and-data>
158 Interface traffic: Number of octets, packets and errors for each
162 IPC counters: semaphores used, number of allocated segments in shared
166 IPMI (Intelligent Platform Management Interface) sensors information.
169 Iptables' counters: Number of bytes that were matched by a certain
173 IPVS connection statistics (number of connections, octets and packets
174 for each service and destination).
175 See http://www.linuxvirtualserver.org/software/index.html.
178 IRQ counters: Frequency in which certain interrupts occur.
181 Integrates a `Java Virtual Machine' (JVM) to execute plugins in Java
183 See docs/BUILD.java.md for detailed build instructions.
186 System load average over the last 1, 5 and 15 minutes.
189 Detailed CPU statistics of the “Logical Partitions” virtualization
190 technique built into IBM's POWER processors.
193 The Lua plugin implements a Lua interpreter into collectd. This
194 makes it possible to write plugins in Lua which are executed by
195 collectd without the need to start a heavy interpreter every interval.
196 See collectd-lua(5) for details.
199 Size of “Logical Volumes” (LV) and “Volume Groups” (VG) of Linux'
200 “Logical Volume Manager” (LVM).
203 Queries very detailed usage statistics from wireless LAN adapters and
204 interfaces that use the Atheros chipset and the MadWifi driver.
207 Motherboard sensors: temperature, fan speed and voltage information,
211 Monitor machine check exceptions (hardware errors detected by hardware
212 and reported to software) reported by mcelog and generate appropriate
213 notifications when machine check exceptions are detected.
216 Linux software-RAID device information (number of active, failed, spare
220 Query and parse data from a memcache daemon (memcached).
223 Statistics of the memcached distributed caching system.
224 <http://www.danga.com/memcached/>
227 Memory utilization: Memory occupied by running processes, page cache,
228 buffer cache and free.
231 Collects CPU usage, memory usage, temperatures and power consumption from
232 Intel Many Integrated Core (MIC) CPUs.
235 Reads values from Modbus/TCP enabled devices. Supports reading values
236 from multiple "slaves" so gateway devices can be used.
239 Information provided by serial multimeters, such as the `Metex
243 MySQL server statistics: Commands issued, handlers triggered, thread
244 usage, query cache utilization and traffic/octets sent and received.
247 Plugin to query performance values from a NetApp storage system using the
248 “Manage ONTAP” SDK provided by NetApp.
251 Very detailed Linux network interface and routing statistics. You can get
252 (detailed) information on interfaces, qdiscs, classes, and, if you can
253 make use of it, filters.
256 Receive values that were collected by other hosts. Large setups will
257 want to collect the data on one dedicated machine, and this is the
258 plugin of choice for that.
261 NFS Procedures: Which NFS command were called how often.
264 Collects statistics from `nginx' (speak: engine X), a HTTP and mail
268 NTP daemon statistics: Local clock drift, offset to peers, etc.
271 Information about Non-Uniform Memory Access (NUMA).
274 Network UPS tools: UPS current, voltage, power, charge, utilisation,
275 temperature, etc. See upsd(8).
278 Queries routing information from the “Optimized Link State Routing”
281 - onewire (EXPERIMENTAL!)
282 Read onewire sensors using the owcapu library of the owfs project.
283 Please read in collectd.conf(5) why this plugin is experimental.
286 Read monitoring information from OpenLDAP's cn=Monitor subtree.
289 RX and TX of each client in openvpn-status.log (status-version 2).
290 <http://openvpn.net/index.php/documentation/howto.html>
293 Query data from an Oracle database.
296 The plugin monitors the link status of Open vSwitch (OVS) connected
297 interfaces, dispatches the values to collectd and sends the notification
298 whenever the link state change occurs in the OVS database. It requires
299 YAJL library to be installed.
300 Detailed instructions for installing and setting up Open vSwitch, see
302 <http://openvswitch.org/support/dist-docs/INSTALL.rst.html>
305 The plugin collects the statistics of OVS connected bridges and
306 interfaces. It requires YAJL library to be installed.
307 Detailed instructions for installing and setting up Open vSwitch, see
309 <http://openvswitch.org/support/dist-docs/INSTALL.rst.html>
312 The perl plugin implements a Perl-interpreter into collectd. You can
313 write your own plugins in Perl and return arbitrary values using this
314 API. See collectd-perl(5).
317 Query statistics from BSD's packet filter "pf".
320 Receive and dispatch timing values from Pinba, a profiling extension for
324 Network latency: Time to reach the default gateway or another given
328 PostgreSQL database statistics: active server connections, transaction
329 numbers, block IO, table row manipulations.
332 PowerDNS name server statistics.
335 Process counts: Number of running, sleeping, zombie, ... processes.
338 Counts various aspects of network protocols such as IP, TCP, UDP, etc.
341 The python plugin implements a Python interpreter into collectd. This
342 makes it possible to write plugins in Python which are executed by
343 collectd without the need to start a heavy interpreter every interval.
344 See collectd-python(5) for details.
347 The redis plugin gathers information from a Redis server, including:
348 uptime, used memory, total connections etc.
351 Query interface and wireless registration statistics from RouterOS.
354 RRDtool caching daemon (RRDcacheD) statistics.
357 System sensors, accessed using lm_sensors: Voltages, temperatures and
361 RX and TX of serial interfaces. Linux only; needs root privileges.
364 Uses libsigrok as a backend, allowing any sigrok-supported device
365 to have its measurements fed to collectd. This includes multimeters,
366 sound level meters, thermometers, and much more.
369 Collect SMART statistics, notably load cycle count, temperature
373 Read values from SNMP (Simple Network Management Protocol) enabled
374 network devices such as switches, routers, thermometers, rack monitoring
375 servers, etc. See collectd-snmp(5).
378 Acts as a StatsD server, reading values sent over the network from StatsD
379 clients and calculating rates and other aggregates out of these values.
382 Pages swapped out onto hard disk or whatever is called `swap' by the OS..
385 Parse table-like structured files.
388 Follows (tails) log files, parses them by lines and submits matched
392 Follows (tails) files in CSV format, parses each line and submits
396 Bytes and operations read and written on tape devices. Solaris only.
399 Number of TCP connections to specific local and remote ports.
402 TeamSpeak2 server statistics.
405 Plugin to read values from `The Energy Detective' (TED).
408 Linux ACPI thermal zone information.
411 Reads the number of records and file size from a running Tokyo Tyrant
415 Reads CPU frequency and C-state residency on modern Intel
416 turbo-capable processors.
419 System uptime statistics.
422 Users currently logged in.
425 Various statistics from Varnish, an HTTP accelerator.
428 CPU, memory, disk and network I/O statistics from virtual machines.
431 Virtual memory statistics, e.g. the number of page-ins/-outs or the
432 number of pagefaults.
435 System resources used by Linux VServers.
436 See <http://linux-vserver.org/>.
439 Link quality of wireless cards. Linux only.
442 XEN Hypervisor CPU stats.
445 Bitrate and frequency of music played with XMMS.
448 Statistics for ZFS' “Adaptive Replacement Cache” (ARC).
451 Measures the percentage of cpu load per container (zone) under Solaris 10
455 Read data from Zookeeper's MNTR command.
457 * Output can be written or sent to various destinations by the following
461 Sends JSON-encoded data to an Advanced Message Queuing Protocol (AMQP)
462 server, such as RabbitMQ.
465 Write to comma separated values (CSV) files. This needs lots of
466 diskspace but is extremely portable and can be analysed with almost
467 every program that can analyse anything. Even Microsoft's Excel..
470 Send and receive values over the network using the gRPC framework.
473 It's possible to implement write plugins in Lua using the Lua
474 plugin. See collectd-lua(5) for details.
477 Publishes and subscribes to MQTT topics.
480 Send the data to a remote host to save the data somehow. This is useful
481 for large setups where the data should be saved by a dedicated machine.
484 Of course the values are propagated to plugins written in Perl, too, so
485 you can easily do weird stuff with the plugins we didn't dare think of
486 ;) See collectd-perl(5).
489 It's possible to implement write plugins in Python using the python
490 plugin. See collectd-python(5) for details.
493 Output to round-robin-database (RRD) files using the RRDtool caching
494 daemon (RRDcacheD) - see rrdcached(1). That daemon provides a general
495 implementation of the caching done by the `rrdtool' plugin.
498 Output to round-robin-database (RRD) files using librrd. See rrdtool(1).
499 This is likely the most popular destination for such values. Since
500 updates to RRD-files are somewhat expensive this plugin can cache
501 updates to the files and write a bunch of updates at once, which lessens
505 Receives and handles queries from SNMP master agent and returns the data
506 collected by read plugins. Handles requests only for OIDs specified in
507 configuration file. To handle SNMP queries the plugin gets data from
508 collectd and translates requested values from collectd's internal format
512 One can query the values from the unixsock plugin whenever they're
513 needed. Please read collectd-unixsock(5) for a description on how that's
517 Sends data to Carbon, the storage layer of Graphite using TCP or UDP. It
518 can be configured to avoid logging send errors (especially useful when
522 Sends the values collected by collectd to a web-server using HTTP POST
523 requests. The transmitted data is either in a form understood by the
524 Exec plugin or formatted in JSON.
527 Sends data to Apache Kafka, a distributed queue.
530 Writes data to the log
533 Sends data to MongoDB, a NoSQL database.
536 Publish values using an embedded HTTP server, in a format compatible
537 with Prometheus' collectd_exporter.
540 Sends the values to a Redis key-value database server.
543 Sends data to Riemann, a stream processing and monitoring system.
546 Sends data to Sensu, a stream processing and monitoring system, via the
547 Sensu client local TCP socket.
550 Sends data OpenTSDB, a scalable no master, no shared state time series
553 * Logging is, as everything in collectd, provided by plugins. The following
554 plugins keep us informed about what's going on:
557 Writes log messages to a file or STDOUT/STDERR.
560 Log messages are propagated to plugins written in Perl as well.
561 See collectd-perl(5).
564 It's possible to implement log plugins in Python using the python plugin.
565 See collectd-python(5) for details.
568 Logs to the standard UNIX logging mechanism, syslog.
571 Writes log messages formatted as logstash JSON events.
573 * Notifications can be handled by the following plugins:
576 Send a desktop notification to a notification daemon, as defined in
577 the Desktop Notification Specification. To actually display the
578 notifications, notification-daemon is required.
579 See http://www.galago-project.org/specs/notification/.
582 Send an E-mail with the notification message to the configured
586 Submit notifications as passive check results to a local nagios instance.
589 Execute a program or script to handle the notification.
590 See collectd-exec(5).
593 Writes the notification message to a file or STDOUT/STDERR.
596 Send the notification to a remote host to handle it somehow.
599 Notifications are propagated to plugins written in Perl as well.
600 See collectd-perl(5).
603 It's possible to implement notification plugins in Python using the
604 python plugin. See collectd-python(5) for details.
606 * Value processing can be controlled using the "filter chain" infrastructure
607 and "matches" and "targets". The following plugins are available:
609 - match_empty_counter
610 Match counter values which are currently zero.
613 Match values using a hash function of the hostname.
616 Match values by their identifier based on regular expressions.
619 Match values with an invalid timestamp.
622 Select values by their data sources' values.
624 - target_notification
625 Create and dispatch a notification.
628 Replace parts of an identifier using regular expressions.
631 Scale (multiply) values by an arbitrary value.
634 Set (overwrite) entire parts of an identifier.
636 * Miscellaneous plugins:
639 Selects multiple value lists based on patterns or regular expressions
640 and creates new aggregated values lists from those.
643 Checks values against configured thresholds and creates notifications if
644 values are out of bounds. See collectd-threshold(5) for details.
647 Sets the hostname to a unique identifier. This is meant for setups
648 where each client may migrate to another physical host, possibly going
649 through one or more name changes in the process.
651 * Performance: Since collectd is running as a daemon it doesn't spend much
652 time starting up again and again. With the exception of the exec plugin no
653 processes are forked. Caching in output plugins, such as the rrdtool and
654 network plugins, makes sure your resources are used efficiently. Also,
655 since collectd is programmed multithreaded it benefits from hyper-threading
656 and multicore processors and makes sure that the daemon isn't idle if only
657 one plugin waits for an IO-operation to complete.
659 * Once set up, hardly any maintenance is necessary. Setup is kept as easy
660 as possible and the default values should be okay for most users.
666 * collectd's configuration file can be found at `sysconfdir'/collectd.conf.
667 Run `collectd -h' for a list of built-in defaults. See `collectd.conf(5)'
668 for a list of options and a syntax description.
670 * When the `csv' or `rrdtool' plugins are loaded they'll write the values to
671 files. The usual place for these files is beneath `/var/lib/collectd'.
673 * When using some of the plugins, collectd needs to run as user root, since
674 only root can do certain things, such as craft ICMP packages needed to ping
675 other hosts. collectd should NOT be installed setuid root since it can be
676 used to overwrite valuable files!
678 * Sample scripts to generate graphs reside in `contrib/' in the source
679 package or somewhere near `/usr/share/doc/collectd' in most distributions.
680 Please be aware that those script are meant as a starting point for your
681 own experiments.. Some of them require the `RRDs' Perl module.
682 (`librrds-perl' on Debian) If you have written a more sophisticated
683 solution please share it with us.
685 * The RRAs of the automatically created RRD files depend on the `step'
686 and `heartbeat' settings given. If change these settings you may need to
687 re-create the files, losing all data. Please be aware of that when changing
688 the values and read the rrdtool(1) manpage thoroughly.
691 collectd and chkrootkit
692 -----------------------
694 If you are using the `dns' plugin chkrootkit(1) will report collectd as a
695 packet sniffer ("<iface>: PACKET SNIFFER(/usr/sbin/collectd[<pid>])"). The
696 plugin captures all UDP packets on port 53 to analyze the DNS traffic. In
697 this case, collectd is a legitimate sniffer and the report should be
698 considered to be a false positive. However, you might want to check that
699 this really is collectd and not some other, illegitimate sniffer.
705 To compile collectd from source you will need:
707 * Usual suspects: C compiler, linker, preprocessor, make, ...
709 collectd makes use of some common C99 features, e.g. compound literals and
710 mixed declarations, and therefore requires a C99 compatible compiler.
712 On Debian and Ubuntu, the "build-essential" package should pull in
713 everything that's necessary.
715 * A POSIX-threads (pthread) implementation.
716 Since gathering some statistics is slow (network connections, slow devices,
717 etc) collectd is parallelized. The POSIX threads interface is being
718 used and should be found in various implementations for hopefully all
721 * When building from the Git repository, flex (tokenizer) and bison (parser
722 generator) are required. Release tarballs include the generated files – you
723 don't need these packages in that case.
725 * aerotools-ng (optional)
726 Used by the `aquaero' plugin. Currently, the `libaquaero5' library, which
727 is used by the `aerotools-ng' toolkit, is not compiled as a shared object
728 nor does it feature an installation routine. Therefore, you need to point
729 collectd's configure script at the source directory of the `aerotools-ng'
731 <https://github.com/lynix/aerotools-ng>
733 * CoreFoundation.framework and IOKit.framework (optional)
734 For compiling on Darwin in general and the `apple_sensors' plugin in
736 <http://developer.apple.com/corefoundation/>
738 * libatasmart (optional)
739 Used by the `smart' plugin.
740 <http://git.0pointer.de/?p=libatasmart.git>
743 The `turbostat' plugin can optionally build Linux Capabilities support,
744 which avoids full privileges requirement (aka. running as root) to read
746 <http://sites.google.com/site/fullycapable/>
748 * libclntsh (optional)
749 Used by the `oracle' plugin.
751 * libhiredis (optional)
752 Used by the redis plugin. Please note that you require a 0.10.0 version
753 or higher. <https://github.com/redis/hiredis>
756 If you want to use the `apache', `ascent', `bind', `curl', `curl_json',
757 `curl_xml', `nginx', or `write_http' plugin.
758 <http://curl.haxx.se/>
761 Used by the `dbi' plugin to connect to various databases.
762 <http://libdbi.sourceforge.net/>
764 * libesmtp (optional)
765 For the `notify_email' plugin.
766 <http://www.stafford.uklinux.net/libesmtp/>
768 * libganglia (optional)
769 Used by the `gmond' plugin to process data received from Ganglia.
770 <http://ganglia.info/>
773 Used by the `grpc' plugin. gRPC requires a C++ compiler supporting the
777 * libgcrypt (optional)
778 Used by the `network' plugin for encryption and authentication.
779 <http://www.gnupg.org/>
782 Used by the `gps' plugin.
783 <http://developer.berlios.de/projects/gpsd/>
785 * libi2c-dev (optional)
786 Used for the plugin `barometer', provides just the i2c-dev.h header file
787 for user space i2c development.
790 For querying iptables counters.
791 <http://netfilter.org/>
793 * libjevents (optional)
794 The jevents library is used by the `intel_pmu' plugin to access the Linux
795 kernel perf interface.
796 Note: the library should be build with -fPIC flag to be linked with
797 intel_pmu shared object correctly.
798 <https://github.com/andikleen/pmu-tools>
801 Library that encapsulates the `Java Virtual Machine' (JVM). This library is
802 used by the `java' plugin to execute Java bytecode.
803 See docs/BUILD.java.md for detailed build instructions.
804 <http://openjdk.java.net/> (and others)
807 Used by the `openldap' plugin.
808 <http://www.openldap.org/>
811 Used by the `lua' plugin. Currently, Lua 5.1 and later are supported.
812 <https://www.lua.org/>
815 Used by the `lvm' plugin.
816 <ftp://sources.redhat.com/pub/lvm2/>
818 * libmemcached (optional)
819 Used by the `memcachec' plugin to connect to a memcache daemon.
820 <http://tangent.org/552/libmemcached.html>
822 * libmicrohttpd (optional)
823 Used by the write_prometheus plugin to run an http daemon.
824 <http://www.gnu.org/software/libmicrohttpd/>
827 Used by the `netlink' plugin.
828 <http://www.netfilter.org/projects/libmnl/>
830 * libmodbus (optional)
831 Used by the `modbus' plugin to communicate with Modbus/TCP devices. The
832 `modbus' plugin works with version 2.0.3 of the library – due to frequent
833 API changes other versions may or may not compile cleanly.
834 <http://www.libmodbus.org/>
836 * libmysqlclient (optional)
837 Unsurprisingly used by the `mysql' plugin.
838 <http://dev.mysql.com/>
840 * libnetapp (optional)
841 Required for the `netapp' plugin.
842 This library is part of the “Manage ONTAP SDK” published by NetApp.
844 * libnetsnmp (optional)
845 For the `snmp' and 'snmp_agent' plugins.
846 <http://www.net-snmp.org/>
848 * libnetsnmpagent (optional)
849 Required for the 'snmp_agent' plugin.
850 <http://www.net-snmp.org/>
852 * libnotify (optional)
853 For the `notify_desktop' plugin.
854 <http://www.galago-project.org/>
856 * libopenipmi (optional)
857 Used by the `ipmi' plugin to prove IPMI devices.
858 <http://openipmi.sourceforge.net/>
860 * liboping (optional)
861 Used by the `ping' plugin to send and receive ICMP packets.
862 <http://octo.it/liboping/>
864 * libowcapi (optional)
865 Used by the `onewire' plugin to read values from onewire sensors (or the
867 <http://www.owfs.org/>
870 Used to capture packets by the `dns' plugin.
871 <http://www.tcpdump.org/>
873 * libperfstat (optional)
874 Used by various plugins to gather statistics under AIX.
877 Obviously used by the `perl' plugin. The library has to be compiled with
878 ithread support (introduced in Perl 5.6.0).
879 <http://www.perl.org/>
882 The PostgreSQL C client library used by the `postgresql' plugin.
883 <http://www.postgresql.org/>
886 The PQoS library for Intel(R) Resource Director Technology used by the
888 <https://github.com/01org/intel-cmt-cat>
890 * libprotobuf, protoc 3.0+ (optional)
891 Used by the `grpc' plugin to generate service stubs and code to handle
892 network packets of collectd's protobuf-based network protocol.
893 <https://developers.google.com/protocol-buffers/>
895 * libprotobuf-c, protoc-c (optional)
896 Used by the `pinba' plugin to generate a parser for the network packets
897 sent by the Pinba PHP extension.
898 <http://code.google.com/p/protobuf-c/>
900 * libpython (optional)
901 Used by the `python' plugin. Currently, Python 2.6 and later and Python 3
903 <http://www.python.org/>
905 * librabbitmq (optional; also called “rabbitmq-c”)
906 Used by the `amqp' plugin for AMQP connections, for example to RabbitMQ.
907 <http://hg.rabbitmq.com/rabbitmq-c/>
909 * librdkafka (optional; also called “rdkafka”)
910 Used by the `write_kafka' plugin for producing messages and sending them
912 <https://github.com/edenhill/librdkafka>
914 * librouteros (optional)
915 Used by the `routeros' plugin to connect to a device running `RouterOS'.
916 <http://octo.it/librouteros/>
919 Used by the `rrdtool' and `rrdcached' plugins. The latter requires RRDtool
920 client support which was added after version 1.3 of RRDtool. Versions 1.0,
921 1.2 and 1.3 are known to work with the `rrdtool' plugin.
922 <http://oss.oetiker.ch/rrdtool/>
924 * librt, libsocket, libkstat, libdevinfo (optional)
925 Various standard Solaris libraries which provide system functions.
926 <http://developers.sun.com/solaris/>
928 * libsensors (optional)
929 To read from `lm_sensors', see the `sensors' plugin.
930 <http://www.lm-sensors.org/>
932 * libsigrok (optional)
933 Used by the `sigrok' plugin. In addition, libsigrok depends on glib,
934 libzip, and optionally (depending on which drivers are enabled) on
935 libusb, libftdi and libudev.
937 * libstatgrab (optional)
938 Used by various plugins to collect statistics on systems other than Linux
940 <http://www.i-scream.org/libstatgrab/>
942 * libtokyotyrant (optional)
943 Used by the `tokyotyrant' plugin.
944 <http://1978th.net/tokyotyrant/>
946 * libupsclient/nut (optional)
947 For the `nut' plugin which queries nut's `upsd'.
948 <http://networkupstools.org/>
951 Collect statistics from virtual machines.
952 <http://libvirt.org/>
955 Parse XML data. This is needed for the `ascent', `bind', `curl_xml' and
957 <http://xmlsoft.org/>
960 Used by the `xencpu' plugin.
961 <http://xenbits.xensource.com/>
964 <http://www.xmms.org/>
967 Parse JSON data. This is needed for the `ceph', `curl_json', 'ovs_events',
968 'ovs_stats' and `log_logstash' plugins.
969 <http://github.com/lloyd/yajl>
971 * libvarnish (optional)
972 Fetches statistics from a Varnish instance. This is needed for the
974 <http://varnish-cache.org>
976 * riemann-c-client (optional)
977 For the `write_riemann' plugin.
978 <https://github.com/algernon/riemann-c-client>
980 Configuring / Compiling / Installing
981 ------------------------------------
983 To configure, build and install collectd with the default settings, run
984 `./configure && make && make install'. For detailed, generic instructions
985 see INSTALL. For a complete list of configure options and their description,
986 run `./configure --help'.
988 By default, the configure script will check for all build dependencies and
989 disable all plugins whose requirements cannot be fulfilled (any other plugin
990 will be enabled). To enable a plugin, install missing dependencies (see
991 section `Prerequisites' above) and rerun `configure'. If you specify the
992 `--enable-<plugin>' configure option, the script will fail if the depen-
993 dencies for the specified plugin are not met. In that case you can force the
994 plugin to be built using the `--enable-<plugin>=force' configure option.
995 This will most likely fail though unless you're working in a very unusual
996 setup and you really know what you're doing. If you specify the
997 `--disable-<plugin>' configure option, the plugin will not be built. If you
998 specify the `--enable-all-plugins' or `--disable-all-plugins' configure
999 options, all plugins will be enabled or disabled respectively by default.
1000 Explicitly enabling or disabling a plugin overwrites the default for the
1001 specified plugin. These options are meant for package maintainers and should
1002 not be used in everyday situations.
1004 By default, collectd will be installed into `/opt/collectd'. You can adjust
1005 this setting by specifying the `--prefix' configure option - see INSTALL for
1006 details. If you pass DESTDIR=<path> to `make install', <path> will be
1007 prefixed to all installation directories. This might be useful when creating
1008 packages for collectd.
1010 Generating the configure script
1011 -------------------------------
1013 Collectd ships with a `build.sh' script to generate the `configure'
1014 script shipped with releases.
1016 To generate the `configure` script, you'll need the following dependencies:
1025 The `build.sh' script takes no arguments.
1031 To compile correctly collectd needs to be able to initialize static
1032 variables to NAN (Not A Number). Some C libraries, especially the GNU
1033 libc, have a problem with that.
1035 Luckily, with GCC it's possible to work around that problem: One can define
1036 NAN as being (0.0 / 0.0) and `isnan' as `f != f'. However, to test this
1037 ``implementation'' the configure script needs to compile and run a short
1038 test program. Obviously running a test program when doing a cross-
1039 compilation is, well, challenging.
1041 If you run into this problem, you can use the `--with-nan-emulation'
1042 configure option to force the use of this implementation. We can't promise
1043 that the compiled binary actually behaves as it should, but since NANs
1044 are likely never passed to the libm you have a good chance to be lucky.
1046 Likewise, collectd needs to know the layout of doubles in memory, in order
1047 to craft uniform network packets over different architectures. For this, it
1048 needs to know how to convert doubles into the memory layout used by x86. The
1049 configure script tries to figure this out by compiling and running a few
1050 small test programs. This is of course not possible when cross-compiling.
1051 You can use the `--with-fp-layout' option to tell the configure script which
1052 conversion method to assume. Valid arguments are:
1054 * `nothing' (12345678 -> 12345678)
1055 * `endianflip' (12345678 -> 87654321)
1056 * `intswap' (12345678 -> 56781234)
1062 Please use GitHub to report bugs and submit pull requests:
1063 <https://github.com/collectd/collectd/>.
1064 See CONTRIBUTING.md for details.
1066 For questions, development information and basically all other concerns please
1067 send an email to collectd's mailing list at
1068 <list at collectd.org>.
1070 For live discussion and more personal contact visit us in IRC, we're in
1071 channel #collectd on freenode.
1077 Florian octo Forster <octo at collectd.org>,
1078 Sebastian tokkee Harl <sh at tokkee.org>,
1079 and many contributors (see `AUTHORS').
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